Analysis of Mechanical and Acoustic Emission Characteristics of Rock Materials with Double-Hole Defects Based on Particle Flow Code

<div>Sandstone numerical models based on PFC. (a) Numerical model I: Intact rock without center and secondary holes. (b) Numerical model II: Double-hole defective rock with a center hole (<i>D</i> = 20 mm) and secondary hole (<i>d</i> = 5 mm). (c) Numerical model III: Double-hole defective rock with a center hole (<i>D</i> = 20 mm) and secondary hole (<i>d</i> = 20 mm).</div>

Shock and Vibration

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Figure 3

Figure 3: Analysis of Mechanical and Acoustic Emission Characteristics of Rock Materials with Double-Hole Defects Based on Particle Flow Code 